CN114873480A - Gantry crane for construction site - Google Patents
Gantry crane for construction site Download PDFInfo
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- CN114873480A CN114873480A CN202210808479.6A CN202210808479A CN114873480A CN 114873480 A CN114873480 A CN 114873480A CN 202210808479 A CN202210808479 A CN 202210808479A CN 114873480 A CN114873480 A CN 114873480A
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- gear
- plate
- driving wheel
- brush roller
- wall
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- 238000010276 construction Methods 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 61
- 230000005540 biological transmission Effects 0.000 claims description 21
- 239000000428 dust Substances 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 10
- 239000010720 hydraulic oil Substances 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000010408 sweeping Methods 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000017491 Bambusa tulda Nutrition 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 claims 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 1
- 239000011425 bamboo Substances 0.000 claims 1
- 239000004576 sand Substances 0.000 description 14
- 239000002245 particle Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000004566 building material Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/14—Trolley or crane travel drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/18—Travelling gear incorporated in or fitted to trolleys or cranes with means for locking trolleys or cranes to runways or tracks to prevent inadvertent movements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
A gantry crane for construction sites comprises a slide rail supported by two frame bodies, horizontal grooves are formed in the front side and the rear side of the slide rail, racks are arranged on the top wall of the horizontal grooves along the length direction of the slide rail, a pulley mechanism is assembled on the slide rail and comprises a slide frame sleeved on the outer side of the slide rail, a hoisting part is arranged at the lower end of the slide frame, and driving parts are arranged on the front side and the rear side of the slide frame.
Description
Technical Field
The invention relates to a gantry crane, in particular to a gantry crane for a construction site.
Background
Hoisting devices have been widely used in the construction field, where gantry cranes are commonly used in construction sites for building materials on unloading trucks. Gantry crane mainly includes slide rail and coaster mechanism and sets up the hoisting part on coaster mechanism, hoisting part hoists building material back, drive building material shift position through coaster mechanism, thereby realize building material's handling, in order to satisfy building site's demand, gantry crane installs outdoor usually, when outdoor use, often can lead to the slide rail to be drenched by water because of rainy or other reasons, at this moment coaster mechanism can skid or swift current car on the slide rail when moving the back and stopping, and then lead to coaster mechanism can't in time to stop, this kind of condition very easily causes the incident appear, thereby bring unnecessary loss for building site.
Disclosure of Invention
The invention provides a gantry crane for construction sites, which solves the defects of the prior art and prevents a pulley mechanism from slipping on a slide rail when moving.
In order to achieve the purpose, the invention firstly provides a gantry crane for a construction site, which comprises a gantry consisting of two frame bodies and a slide rail horizontally arranged between the two frame bodies, wherein a pulley mechanism is arranged on the slide rail, a horizontal groove is formed in at least one side of the slide rail along the length direction, the pulley mechanism comprises a rack arranged along the length direction of the top wall of the horizontal groove, a slide frame sleeved outside the slide rail and a driving part arranged in the horizontal groove and matched with the rack for driving the slide frame to move on the slide rail, a hoisting part is fixed at the bottom of the slide frame, and a driving part is arranged in the horizontal groove;
the utility model discloses a slide rail, including the horizontal inslot running gear of drive part and the actuating mechanism of drive running gear removal, the running gear includes drive wheel, master gear, auxiliary gear and telescopic attenuator, and the drive wheel sets up in the horizontal inslot to with the contact of horizontal slot bottom surface, actuating mechanism passes through transmission and is connected with the drive wheel, master gear rotate connect on the smooth frame inner wall, and with rack toothing, auxiliary gear rotate connect on the smooth frame inner wall, and with main gear meshing, the distance that the master gear rolled the round on the rack equals the distance that the drive wheel rolled the round on the slide rail, the top of telescopic attenuator is eccentrically articulated with the lateral wall of auxiliary gear, and the bottom is eccentrically articulated with the drive wheel lateral wall, and during initial condition, telescopic attenuator is equipped with the contained angle with the vertical direction.
By adopting the structure, the device comprises two moving forms:
A. when the driving wheel drives the pulley mechanism to normally move:
the driving wheel drives the sliding frame to move, the sliding frame moves to enable the main gear to roll on the rack, the main gear drives the auxiliary gear to rotate, the rotation direction of the auxiliary gear is the same as that of the driving wheel, therefore, the driving wheel and the main gear can synchronously rotate in the same direction, the length of the telescopic damper is kept unchanged when the driving wheel and the main gear synchronously rotate in the same direction, when the driving wheel stops rotating, the pulley mechanism loses power to stop moving, and the main gear also stops moving;
B. when the driving wheel slips:
after the driving wheel stops rotating, if the sliding or sliding car is caused by rainwater or other reasons, the sliding frame can continue to slide at the moment, under the limiting action of the rack, the main gear continues to rotate and drives the auxiliary gear to continue to rotate, and the driving wheel stops rotating, so that the auxiliary gear can drive the telescopic damper to stretch or compress, one rotation circle of the auxiliary gear can drive the telescopic damper to stretch and compress for one time, the telescopic damper can consume kinetic energy in the stretching and compressing process, so that resistance is generated when the sliding frame continues to slide, the kinetic energy of the pulley mechanism is rapidly consumed, the pulley mechanism is rapidly stopped, and safety accidents caused by continuous sliding of the pulley mechanism are avoided.
In this embodiment, the distance from the hinge shaft at the upper end of the telescopic damper to the center of the auxiliary gear is equal to the distance from the hinge shaft at the lower end of the telescopic damper to the center of the driving wheel.
In the embodiment, two horizontal grooves are symmetrically distributed on the sliding rail, two traveling mechanisms are symmetrically distributed on the surface of each horizontal groove, and two driving wheels in each horizontal groove are driven by a transmission device to realize synchronous and equidirectional rotation. The sliding frame moves on the sliding rail through the traveling mechanisms arranged on two sides of the sliding rail, and the horizontal groove on each side is provided with two traveling mechanisms, so that the traveling stability is ensured on the premise that the stress of one-side traveling meets the requirement.
In this embodiment, the telescopic damper includes an upper tube with a closed upper end and a lower tube with a closed lower end, the lower tube is sleeved in the upper tube, an inner ring plate is fixed at the bottom end of the upper tube, a through hole matched with the outer diameter of the lower tube is arranged in the middle of the inner ring plate, an outer ring plate is fixed at the top end of the lower tube, the outer diameter of the outer ring plate is matched with the inner diameter of the upper tube, the outer ring plate of the lower tube is in sealed sliding connection with the inner wall of the upper tube, a long rod coaxially arranged with the upper tube is arranged in the inner cavity of the upper tube, the top of the long rod is fixed on the upper tube, a throttle plate is fixed at the bottom of the long rod, the throttle plate is matched with the inner diameter of the lower tube, the throttle plate is in sealed sliding connection with the inner wall of the lower tube, a throttle hole is formed in the throttle plate, hydraulic oil is filled in the lower tube, and inert gas is filled in the upper tube.
When the telescopic damper is compressed, the internal space of the upper cylinder is reduced, so that positive pressure is formed inside the upper cylinder, the throttle plate moves downwards relative to the lower cylinder, hydraulic oil on the lower side of the throttle plate is forced to move to the upper side through the throttle hole, kinetic energy can be consumed in the process, and inert gas in a positive pressure state can provide power for the rebound of the subsequent telescopic damper;
when the telescopic damper is stretched, the inner space of the upper cylinder can be reduced and increased, negative pressure is formed inside the upper cylinder, meanwhile, the throttle plate can move upwards relative to the lower cylinder, hydraulic oil on the upper side of the throttle plate is forced to move to the lower side through the throttle hole, kinetic energy can be consumed in the process, and the inert gas in the negative pressure state can provide power for retraction of the follow-up telescopic damper.
In this embodiment, still including cleaning the subassembly, clean the subassembly and include upper gear, lower gear, drive belt and brush roller, upper gear and the coaxial rigid coupling of auxiliary gear, the brush roller rotates to be connected inboard at the sliding frame to with the coaxial rigid coupling of lower gear, upper gear, lower gear pass through the drive belt linkage, the brush roller sets up on the route of drive wheel, has laid the brush hair on the brush roller, the brush hair on the brush roller contacts with the bottom surface in horizontal groove.
In this embodiment, the upper gear, the lower gear and the transmission belt are arranged outside the sliding frame, a cover is fixed outside the upper gear, the lower gear and the transmission belt on the sliding frame, and the cover covers the upper gear, the lower gear and the transmission belt. The cover can protect the three parts after covering the three parts, and dust and sand grains are prevented from contacting the three parts.
In this embodiment, clean the subassembly still including setting up the collection board on the sliding frame inner wall, the collection board is located between brush roller and the drive wheel, and the collection board is by height to low from drive wheel one side to brush roller one side slope, and the collection board is close to brush roller one side and is located under the brush roller and with horizontal groove diapire sliding connection, and the collection board is close to brush roller one side rigid coupling deflector, the deflector upwards, extend to drive wheel one side for form the collection clearance that is used for collecting the dust between deflector and the collection board.
Taking the pulley mechanism to move towards the left side as an example, when the pulley mechanism moves towards the left side, the auxiliary gear and the driving wheel can rotate anticlockwise, the auxiliary gear can drive the upper gear to rotate anticlockwise when rotating anticlockwise, the upper gear can drive the lower gear to rotate anticlockwise through the driving belt when rotating anticlockwise, the lower gear can drive the bristles on the brush roller to rotate anticlockwise when rotating anticlockwise, the bristles can sweep dust sand particles on the bottom end of the horizontal groove towards one side of the guide plate on the same side when rotating anticlockwise, the dust sand particles can collide against the vertical baffle plate after being guided by the guide plate, then fall into the collection gap between the guide plate and the collection plate under the action of gravity, and when the pulley mechanism moves towards the right side, the dust sand particles on the right side can be swept and collected; the rotation resistance of the driving wheel can be reduced through the cleaning and collecting, and meanwhile, the abrasion speed of the slide rail and the driving wheel can be reduced, so that the service life of the crane is prolonged.
In this embodiment, a vertical baffle plate arranged vertically is fixed on the guide plate between the brush roller and the drive wheel.
As another embodiment of the device, a vertical baffle which is vertically arranged is arranged on the guide plate and between the brush roller and the driving wheel, the bottom end of the vertical baffle is abutted to the top surface of the collecting plate, the cleaning assembly further comprises a piston cylinder which is fixedly connected to the inner wall of the sliding frame and is positioned right above the vertical baffle, a piston column is connected in a sealing and sliding mode in a piston cavity of the piston cylinder, the top of the vertical baffle is fixedly connected with the piston column, a rodless cavity of the piston cylinder is communicated with the inner part of an upper cylinder of the telescopic damper through a high-pressure hose, the bottom, close to one side of the driving wheel, of the collecting plate is rotatably connected with the inner wall of the sliding frame through a rotating shaft, the position, close to the brush roller, of the vertical baffle and abutted to the collecting plate is close to one side of the brush roller, a torsion spring is assembled between the rotating shaft and the inner wall of the sliding frame, and can enable the collecting plate to be overturned to one side of the driving wheel.
In a natural state, the lower end of the vertical baffle overcomes the elasticity of the torsion spring to press the collecting plate downwards, so that the collecting plate is kept in butt joint with the bottom wall of the horizontal groove, and when the pulley mechanism slips, the telescopic damper can stretch out and draw back, so that the air pressure in the high-pressure hose and the piston cavity can be correspondingly changed;
when the telescopic damper contracts, the air pressure in the piston cavity can be increased to form positive pressure, the positive pressure can be applied to the vertical baffle plate through the piston column, and then the vertical baffle plate is applied to the collecting plate, so that the collecting plate applies pressure to the bottom wall of the horizontal groove, the sliding resistance of the pulley mechanism can be increased, and the pulley mechanism is enabled to be rapidly stopped;
when telescopic attenuator extends, the atmospheric pressure of piston intracavity can reduce and form the negative pressure, under the negative pressure effect, the piston post can be inhaled, thereby drive and erect baffle upward movement, when erecting baffle upward movement, under the effect of torsional spring, the collecting plate can overturn to drive wheel one side, when the collecting plate inclines to drive wheel one side, the dust grains of sand that collect on the collecting plate just can fall under the action of gravity on the diapire of horizontal groove, just so can provide the resistance for the slip of drive wheel, thereby make coaster mechanism stop fast.
In conclusion, when the sliding occurs, the corresponding energy dissipation structure consumes the kinetic energy during sliding, so that the pulley mechanism is enabled to stop rapidly, safety accidents caused by continuous sliding of the pulley mechanism are avoided, and in addition, dust and sand particles on the sliding rail can be cleaned and collected when the pulley mechanism moves, so that the rotation resistance of the driving wheel is reduced, and meanwhile, the abrasion speed of the sliding rail and the driving wheel can be reduced, so that the service life of the crane is prolonged.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic cross-sectional structure of the present invention.
Fig. 3 is an enlarged view of the structure at a in fig. 2 according to the present invention.
Fig. 4 is a schematic structural view of the tackle mechanism of the present invention.
Fig. 5 is an enlarged schematic view of the structure at B in fig. 4 according to the present invention.
FIG. 6 is a schematic sectional view showing the telescopic damper of the present invention.
Fig. 7 is a schematic structural view of the upper barrel of the present invention.
In the figure, 1, a frame body; 11. a slide rail; 2. a horizontal groove; 201. a rack; 21. a sliding frame; 211. a hoisting member; 22. a drive mechanism; 23. a drive wheel; 24. a main gear; 25. an auxiliary gear; 26. a telescopic damper; 3. feeding the cylinder; 31. a lower barrel; 32. an inner ring plate; 33. an outer ring plate; 34. a long rod; 35. a throttle plate; 36. an orifice; 4. an upper gear; 41. a brush roller; 42. brushing; 43. a lower gear; 44. a transmission belt; 45. a housing; 46. a collection plate; 47. a guide plate; 48. a vertical baffle plate; 49. a rotating shaft; 5. a piston cylinder; 51. a piston cavity; 52. a piston post; 53. a high pressure hose.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example 1:
as shown in fig. 1 to 7, the present invention provides a gantry crane for construction sites, which comprises a slide rail 11 supported by two frame bodies 1, wherein horizontal grooves 2 are symmetrically formed on both sides of the slide rail 11 along the length direction, in this embodiment, the slide rail 11 is made of i-steel, the horizontal grooves 2 are formed on both sides of the i-steel, a pulley mechanism is installed on the slide rail 11,
the pulley mechanism comprises a rack 201 arranged along the length direction of the top wall of the horizontal groove 2, a sliding frame 21 sleeved outside the sliding rail 11 and a driving part arranged in the horizontal groove 2 and matched with the rack 201 for driving the sliding frame 21 to move on the sliding rail 11, wherein the lower end of the sliding frame 21 is fixedly provided with a hoisting part 211, the hoisting part 211 is used for hoisting building materials, and the driving parts are arranged in the horizontal grooves 2 at the two sides of the sliding rail;
the driving part comprises traveling mechanisms arranged in the horizontal groove 2 and driving mechanisms 22 for driving the traveling mechanisms to move, in the embodiment, the two traveling mechanisms are symmetrically arranged in the horizontal groove 2 in a mirror manner, the traveling mechanisms comprise driving wheels 23, a main gear 24, an auxiliary gear 25 and a telescopic damper 26, the driving wheels 23 of the two traveling mechanisms are arranged in the horizontal groove 2 and are in contact with the bottom surface of the horizontal groove 2, the driving mechanisms 22 are connected with the two driving wheels 23 through a transmission device to realize synchronous and same-direction rotation of the two driving wheels 23, in the embodiment, the driving mechanisms 22 comprise motors and transmission devices, the motors are connected with the input ends of the transmission devices, the output ends of the transmission devices are connected with the driving wheels 23, and the transmission devices are in gear transmission;
the main gear 24 is rotatably connected to the inner wall of the sliding frame 21 and meshed with the rack 201, the auxiliary gear 25 is rotatably connected to the inner wall of the sliding frame 21 and meshed with the main gear 24, the auxiliary gear 25 and the main gear 24 are identical in specification, the distance of one circle of rolling of the main gear 24 on the rack 201 is equal to the distance of one circle of rolling of the driving wheel 23 on the sliding rail 11, the top of the telescopic damper 26 is eccentrically hinged to the side wall of the auxiliary gear 25, the bottom of the telescopic damper is eccentrically hinged to the side wall of the driving wheel 23, an included angle is formed between the telescopic damper 26 and the vertical direction in an initial state, and the distance from a hinged shaft at the upper end of the telescopic damper 26 to the center of the auxiliary gear 25 is equal to the distance from the lower end of the hinged shaft to the center of the driving wheel 23.
When in work, the device comprises two moving forms:
A. when the driving wheel 23 drives the pulley mechanism to normally move:
the driving wheel 23 drives the sliding frame 21 to move, the sliding frame 21 moves to enable the main gear 24 to roll on the rack 201, the main gear 24 drives the auxiliary gear 25 to rotate, the rotation direction of the auxiliary gear 25 is the same as that of the driving wheel 23, so that the driving wheel 23 and the main gear 24 can synchronously rotate in the same direction, the length of the telescopic damper 26 is kept unchanged when the driving wheel 23 synchronously rotates in the same direction, when the driving wheel 23 stops rotating, the pulley mechanism loses power to stop moving, and the main gear 24 also stops moving;
B. when the drive wheels 23 slip:
after the driving wheel 23 stops rotating, if the vehicle slips or slips due to rain or other reasons, the sliding frame 21 will continue to slide, under the limiting action of the rack 201, the main gear 24 will continue to rotate, the main gear 24 will drive the auxiliary gear 25 to continue to rotate when continuing to rotate, because the driving wheel 23 has stopped rotating, the auxiliary gear 25 will drive the telescopic damper 26 to stretch or compress, the auxiliary gear 25 will drive the telescopic damper 26 to stretch and compress once when rotating for one circle, the telescopic damper 26 will consume kinetic energy during the stretching and compressing process, so as to generate resistance to the sliding frame 21 to continue sliding, and the kinetic energy of the pulley mechanism is rapidly consumed, thereby rapidly stopping the pulley mechanism, and avoiding the safety accident caused by the pulley mechanism continuing to slip.
As shown in fig. 6 and 7, in this embodiment, the telescopic damper 26 includes an upper tube 3 with a closed upper end and a lower tube 31 with a closed lower end, the lower tube 31 is sleeved in the upper tube 3, an inner ring plate 32 is fixed at the bottom end of the upper tube 3, a through hole matched with the outer diameter of the lower tube 31 is arranged in the middle of the inner ring plate 32, an outer ring plate 33 is fixed at the top end of the lower tube 31, the outer diameter of the outer ring plate 33 is matched with the inner diameter of the upper tube 3, the outer ring plate 33 of the lower tube 31 is connected with the inner wall of the upper tube 3 in a sealing and sliding manner, a long rod 34 arranged coaxially with the upper tube 3 is arranged in the inner cavity of the upper tube 3, the top of the long rod 34 is fixed on the upper tube 3, a throttle plate 35 is fixed at the bottom, the throttle plate 35 is matched with the inner diameter of the lower tube 31, the throttle plate 35 is connected with the inner wall of the lower tube 31 in a sealing and sliding manner, a throttle plate 35 is provided with a throttle hole 36, the lower tube 31 is filled with hydraulic oil, the upper tube 3 is filled with inert gas.
When the telescopic damper 26 is compressed, the internal space of the upper cylinder 3 is reduced, so that positive pressure is formed inside the upper cylinder 3, meanwhile, the throttle plate 35 moves downwards relative to the lower cylinder 31, hydraulic oil on the lower side of the throttle plate 35 is forced to move to the upper side through the throttle hole 36, kinetic energy can be consumed in the process, and inert gas in a positive pressure state can provide power for the rebound of the subsequent telescopic damper 26;
when the telescopic damper 26 is stretched, the inner space of the upper cylinder 3 is reduced and increased, so that negative pressure is formed inside the upper cylinder 3, meanwhile, the throttle plate 35 moves upwards relative to the lower cylinder 31, hydraulic oil on the upper side of the throttle plate 35 is forced to move to the lower side through the throttle hole 36, kinetic energy can be consumed in the process, and inert gas in a negative pressure state can provide power for the subsequent retraction of the telescopic damper 26.
Example 2:
because the crane is used on a building site, dust and sand grains can adhere to the slide rail 11, the dust and sand grains can not only cause resistance to the rotation of the driving wheel 23, but also can accelerate the abrasion speed of the slide rail 11 and the driving wheel 23, in order to alleviate the problem, the embodiment is further improved on the basis of the embodiment 1,
as shown in fig. 2, 3 and 4, the cleaning device further comprises a cleaning assembly, the cleaning assembly comprises an upper gear 4, a lower gear 43, a transmission belt 44 and a brush roller 41, the upper gear 4 is coaxially and fixedly connected with the auxiliary gear 25, the brush roller 41 is rotatably connected to the inner side of the sliding frame 21 and coaxially and fixedly connected with the lower gear 43, the upper gear 4 and the lower gear 43 are linked through the transmission belt 44, the brush roller 41 is arranged on the path of the driving wheel 23, bristles 42 are distributed on the brush roller 41, the bristles 42 on the brush roller 41 are in contact with the bottom surface of the horizontal groove 2, a cover 45 is distributed on the outer sides of the upper gear 4, the lower gear 43 and the transmission belt 44, the cover 45 can cover the upper gear 4, the lower gear 43 and the transmission belt 44 on the same side, and the cover 45 can protect the three from dust and sand particles from being in contact with the cover.
The sweeping assembly further comprises a collecting plate 46 and a vertical baffle 48 which are arranged on the inner wall of the sliding frame 21, the collecting plate 46 is located between the brush roller 41 and the driving wheel 23, the collecting plate 46 is inclined from one side of the driving wheel 23 to one side of the brush roller 41 from high to low, one side of the collecting plate 46 close to the brush roller 41 is located right below the brush roller 41 and is in sliding connection with the bottom wall of the horizontal groove 2, the collecting plate 46 is fixedly connected with a guide plate 47 close to one side of the brush roller 41, the guide plate 47 extends upwards and towards one side of the driving wheel 23, and a collecting gap for collecting dust is formed between the guide plate 47 and the collecting plate 46. A vertical baffle 48, which is arranged vertically, is fixed to the guide plate 47 between the brush roller 41 and the drive wheel 23.
Taking the pulley mechanism moving to the left as an example, when the pulley mechanism moves to the left, the auxiliary gear 25 and the driving wheel 23 both rotate counterclockwise, when the auxiliary gear 25 rotates counterclockwise, the upper gear 4 is driven to rotate counterclockwise, when the upper gear 4 rotates counterclockwise, the lower gear 43 is driven to rotate counterclockwise through the driving belt 44, when the lower gear 43 rotates counterclockwise, the bristles 42 on the brush roller 41 are driven to rotate counterclockwise, when the bristles 42 rotate counterclockwise, the dust sand particles at the bottom end of the horizontal groove 2 are cleaned to one side of the guide plate 47 at the same side, when the dust sand particles are guided by the guide plate 47, the dust sand particles impact the vertical baffle plate 48, then fall into the collecting gap between the guide plate 47 and the collecting plate 46 under the action of gravity, and when the pulley mechanism moves to the right, the dust sand particles at the right side can be cleaned and collected; the rotation resistance of the driving wheel 23 can be reduced by such cleaning and collecting, and the wear rate of the slide rail 11 and the driving wheel 23 can be reduced, so as to prolong the service life of the crane.
Example 3:
this embodiment is different from embodiment 2 in that the bottom end of the vertical baffle 48 abuts against the top surface of the collecting plate 46,
the cleaning assembly comprises a piston cylinder 5 fixedly connected to the inner wall of the sliding frame 21, the piston cylinder 5 is located right above a vertical baffle plate 48, a piston cavity 51 is formed in the lower end of the piston cylinder 5, a piston column 52 is connected to the inside of the piston cavity 51 in a sealing and sliding mode, the top of the vertical baffle plate 48 is fixedly connected with the piston column 52, a rodless cavity of the piston cavity 51 is communicated with the inside of an upper barrel 3 of the telescopic damper 26 through a high-pressure hose 53, the bottom, close to one side of the driving wheel 23, of the collecting plate 46 is rotatably connected with the inner wall of the sliding frame 21 through a rotating shaft 49, the position, abutted to the vertical baffle plate 48 and the collecting plate 46, of the brush roller 41 is close to the inner wall of the rotating shaft 49 and the sliding frame 21, a torsion spring is assembled between the rotating shaft 49 and the inner wall of the sliding frame 21, and the torsion spring can enable the collecting plate 46 to turn towards one side of the driving wheel 23.
In a natural state, the lower end of the vertical baffle plate 48 presses the collecting plate 46 downwards, so that the collecting plate 46 overcomes the elasticity of the torsion spring to keep abutting against the bottom wall of the horizontal groove 2, and when the pulley mechanism slips, the telescopic damper 26 can stretch, so that the air pressure in the high-pressure hose 53 and the piston cavity 51 can be correspondingly changed;
when the telescopic damper 26 contracts, the air pressure in the piston cavity 51 is increased to form positive pressure, the positive pressure is exerted on the vertical baffle plate 48 through the piston column 52, and is further exerted on the collecting plate 46 through the vertical baffle plate 48, so that the collecting plate 46 exerts pressure on the bottom wall of the horizontal groove 2, the sliding resistance of the pulley mechanism can be increased, and the pulley mechanism is promoted to be rapidly stopped;
when telescopic damper 26 extends, the atmospheric pressure in piston chamber 51 can reduce and form the negative pressure, under the negative pressure effect, piston post 52 can be inhaled, thereby drive vertical baffle 48 upward movement, when vertical baffle 48 upward movement, under the effect of torsional spring, collecting plate 46 can overturn to drive wheel 23 one side, when collecting plate 46 inclines to drive wheel 23 one side, the dust grains of sand that collect on collecting plate 46 just can fall under the action of gravity on the diapire of horizontal groove 2, just so can provide the resistance for the slip of drive wheel 23, thereby impel pulley mechanism rapid stop.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides a gantry crane for building site, includes two support bodies (1) and slide rail (11) that the level was fixed between two support bodies (1), install coaster mechanism, its characterized in that on slide rail (11): at least one side of the slide rail (11) along the length direction is provided with a horizontal groove (2), the pulley mechanism comprises a rack (201) arranged along the length direction of the top wall of the horizontal groove (2), a slide frame (21) sleeved on the outer side of the slide rail (11) and a driving part which is arranged in the horizontal groove (2), matched with the rack (201) and used for driving the slide frame (21) to move on the slide rail (11), the bottom of the slide frame (21) is fixed with a hoisting part (211), and the horizontal groove (2) is also internally provided with a driving part;
the driving component comprises a traveling mechanism arranged in the horizontal groove (2) and a driving mechanism (22) for driving the traveling mechanism to move, the traveling mechanism comprises a driving wheel (23), a main gear (24), an auxiliary gear (25) and a telescopic damper (26), the driving wheel (23) is arranged in the horizontal groove (2) and is contacted with the bottom surface of the horizontal groove (2), the driving mechanism (22) is connected with the driving wheel (23) through a transmission device, the main gear (24) is rotationally connected on the inner wall of the sliding frame (21) and is meshed with the rack (201), the auxiliary gear (25) is rotationally connected on the inner wall of the sliding frame (21) and is meshed with the main gear (24), the distance of one circle of rolling of the main gear (24) on the rack (201) is equal to the distance of one circle of rolling of the driving wheel (23) on the sliding rail (11), and the top of the telescopic damper (26) is eccentrically hinged with the side wall of the auxiliary gear (25), the bottom is eccentrically hinged with the side wall of the driving wheel (23), and an included angle is formed between the telescopic damper (26) and the vertical direction in the initial state.
2. A gantry crane for construction site according to claim 1, wherein: the distance from the articulated shaft at the upper end of the telescopic damper (26) to the center of the circle of the auxiliary gear (25) is equal to the distance from the articulated shaft at the lower end thereof to the center of the circle of the driving wheel (23).
3. A gantry crane for construction site according to claim 1, wherein: two horizontal grooves (2) are symmetrically distributed on the sliding rail (11), two traveling mechanisms are symmetrically distributed on the surface of each horizontal groove (2), and two driving wheels (23) in each horizontal groove (2) are driven by a transmission device to realize synchronous and same-direction rotation.
4. A gantry crane for construction site according to claim 1, wherein: the telescopic damper (26) comprises an upper barrel (3) with a closed upper end and a lower barrel (31) with a closed lower end, the lower barrel (31) is sleeved in the upper barrel (3), an inner ring plate (32) is fixed at the bottom end of the upper barrel (3), a through hole matched with the outer diameter of the lower barrel (31) is arranged in the middle of the inner ring plate (32), an outer ring plate (33) is fixed at the top end of the lower barrel (31), the outer diameter of the outer ring plate (33) is matched with the inner diameter of the upper barrel (3), the outer ring plate (33) of the lower barrel (31) is in sealed sliding connection with the inner wall of the upper barrel (3), a long rod (34) coaxially arranged with the upper barrel (3) is arranged in an inner cavity of the upper barrel (3), the top of the long rod (34) is fixed on the upper barrel (3), a throttle plate (35) is fixed at the bottom of the upper barrel (3), the throttle plate (35) is matched with the inner diameter of the lower barrel (31), and the throttle plate (35) is in sealed sliding connection with the inner wall of the lower barrel (31), throttle plate (35) is last to be seted up orifice (36), and lower section of thick bamboo (31) is filled with hydraulic oil, and upper cylinder (3) is inside to be filled with inert gas.
5. A gantry crane for construction sites according to any one of claims 1 to 4, characterized in that: still including cleaning the subassembly, clean the subassembly and include upper gear (4), lower gear (43), drive belt (44) and brush roller (41), upper gear (4) and auxiliary gear (25) coaxial rigid coupling, brush roller (41) rotate to be connected in slide frame (21) inboard to with lower gear (43) coaxial rigid coupling, upper gear (4) and lower gear (43) set up at the homonymy and through drive belt (44) linkage, brush roller (41) set up on the walking route of drive wheel (23), have laid brush hair (42) on brush roller (41), brush hair (42) on brush roller (41) and the bottom surface contact of horizontal groove (2).
6. A gantry crane for construction sites according to claim 5, characterized in that: the upper gear (4), the lower gear (43) and the transmission belt (44) are arranged on the outer side of the sliding frame (21), a cover shell (45) is fixed on the outer side of the upper gear (4), the lower gear (43) and the transmission belt (44) of the sliding frame (21), and the upper gear (4), the lower gear (43) and the transmission belt (44) are covered by the cover shell (45).
7. A gantry crane for construction sites according to claim 5, characterized in that: the sweeping assembly further comprises a collecting plate (46) arranged on the inner wall of the sliding frame (21), the collecting plate (46) is located between the brush roller (41) and the driving wheel (23), the collecting plate (46) inclines from high to low from one side of the driving wheel (23) to one side of the brush roller (41), one side, close to the brush roller (41), of the collecting plate (46) is located under the brush roller (41) and is in sliding connection with the bottom wall of the horizontal groove (2), the collecting plate (46) is fixedly connected with a guide plate (47) close to one side of the brush roller (41), the guide plate (47) extends upwards and towards one side of the driving wheel (23), and a collecting gap for collecting dust is formed between the guide plate (47) and the collecting plate (46).
8. A gantry crane for construction site according to claim 7, wherein: a vertical baffle (48) which is vertically arranged is fixed on the guide plate (47) between the brush roller (41) and the driving wheel (23).
9. A gantry crane for construction site according to claim 7, wherein: a vertical baffle plate (48) which is vertically arranged is arranged on the guide plate (47) and between the brush roller (41) and the driving wheel (23), the bottom end of the vertical baffle plate (48) is abutted against the top surface of the collecting plate (46), the cleaning assembly further comprises a piston cylinder (5) which is fixedly connected to the inner wall of the sliding frame (21), the piston cylinder (5) is positioned right above the vertical baffle plate (48), a piston column (52) is hermetically and slidably connected in a piston cavity (51) of the piston cylinder (5), the top of the vertical baffle plate (48) is fixedly connected with the piston column (52), a rodless cavity of the piston cavity (51) is communicated with the inner part of the upper cylinder (3) of the telescopic damper (26) through a high-pressure hose (53), the bottom of one side of the collecting plate (46) close to the driving wheel (23) is rotatably connected with the inner wall of the sliding frame (21) through a rotating shaft (49), and the abutting position of the vertical baffle plate (48) and the collecting plate (46) is close to one side of the brush roller (41), and a torsion spring is assembled between the rotating shaft (49) and the inner wall of the sliding frame (21), and the torsion spring can enable the collecting plate (46) to turn towards one side of the driving wheel (23).
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| CN202210808479.6A CN114873480B (en) | 2022-07-11 | 2022-07-11 | Gantry crane for construction site |
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| CN202210808479.6A CN114873480B (en) | 2022-07-11 | 2022-07-11 | Gantry crane for construction site |
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| CN114135043A (en) * | 2021-12-13 | 2022-03-04 | 中建五局安装工程有限公司 | Embedded sliding groove type suspended ceiling mounting structure and construction method |
| CN117886228A (en) * | 2024-03-14 | 2024-04-16 | 江苏海曼重工科技有限公司 | Portal crane for hoisting container |
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| CN215326547U (en) * | 2021-11-29 | 2021-12-28 | 河南省晟源起重机械有限公司 | Double-lifting-point double-main-beam bridge crane |
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| US20190031221A1 (en) * | 2016-04-07 | 2019-01-31 | Atsumi Real Estate & Corporation, Inc. | Assembled-type traveling carriage |
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| CN117886228A (en) * | 2024-03-14 | 2024-04-16 | 江苏海曼重工科技有限公司 | Portal crane for hoisting container |
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|---|---|
| CN114873480B (en) | 2022-09-30 |
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